Stretching device for the heel wire of ski ties



June 14, 1949. A. E. P. KJELLSTRM y STRETCIIING DEVICE FOR THE HEEL WIREOF SKI-TIES Filed Feb. 4, 1947 Patented June 14, 1949 OFFICE STRETCHINGDEVICE FOR THE HEEL WIRE OF SKI TIES Alvar Eskil Petrus Kjellstrm,Stockholm, Sweden Application February 4, 1947, Serial No. 726,290 InSweden February 19, 1946 2 Claims.

The present invention relates to a stretching device for the heel wireof ski-ties, which device is located in front of the toe supports of theskitie and consists of a stretching arm swingably journalled on anattachment plate, and of a fastening member` provided with at least oneattachment member for the heel wire and so swingably connected to thestretching arm that the fastening member at swinging of the stretchingarm downwards and forwards is displaced forwards, whereby a plate isswingably journalled on the stretching arm in front of the attachmentmember for the heel wire, which plate covers the attachment member inoperative position.

In order to secure this latter plate in operative position it hasalready been proposed to provide the front end of said plate with aspringing tongue or the like, which at swinging downwards of the plateover the attachment member for the heel wire snaps about an abutmentprovided at the rear end of the fastening member. This locking of thecover plate, however, has not proved to be satisfactory, especially whenthe tie is used at ski-jumps.

The object of the invention is to overcome this inconvenience. For thispurpose, the plate covering the attachment member for the heel wire is,according to the invention, provided with an extension projecting beyondits journalling place on the fastening member, said extension being soformed that when the stretching arm is brought to its operativeposition, said extension will come into contact with the attachmentplate and thereby forcibly hold the cover plate in the position coveringthe attachment member for the heel wire.

The invention will be further explained in connection with thedescription of an embodiment of the stretching device illustrated on theen closed drawing, in which:

Fig. 1 shows a side view of a portion of a ski provided with thestretching device according to the invention.

Fig. 2 is a longitudinal sectional elevation along the line II-II inFig. 3 which is a plan view of a part of the ski and the stretchingdevice.

On the drawing I designates the ski on which the toe supports 2 areattached. In front of these the device provided for the stretching ofthe heel wire 3 is mounted. Said device comprises an attachment plate 4secured by .means of screws I6 to the ski, on which plate a stretchingarm 5 is swingably mounted on pivots 8. A fastening member 6 forattachment of the heel wire 3 is, by means of a pivot 9 swingablyconnected to said stretching arm and is provided in a manner known perse with one or more grooves 1 open upwards, which enable a setting ofthe length of the heel wire 3. The pivot 9 for the fastening member 6 isso positioned that this member when the stretching arm 5 is swungdownwards and forwards is displaced forwards. At the front end of thefastening member 5 a plate I0 is swingably journalled, preferably on thepivot 9, said plate covering, in operative position, the grooves i ofthe fastening member t.

This plate lo is provided with an extension Il projecting beyond thejournalling place 9 on the fastening member said extension beingprovided at its front end with a tongue I2 directed downwards, whichwhen the stretching arm 5 is swung downwards forcibly makes contact withan upwards directed abutment i3 provided at .the front end of theattachment plate 4, whereby the cover plate It in its turn forcibly willbe held in the position covering the grooves i. The rear end of theplate lo may preferably be provided with a snapspring l5 in a mannerknown per se, which spring, when the plate it is swung downwards overthe grooves l of the fastening member E grasps the rear end of saidmember.

Having now particularly described the nature of my invention and themanner of its operation, what I claim is:

1. Ski-tie having a heel wire and toe supports and provided with astretching device for the heel wire located in front of said toesupports, and comprising an attachment plate, a stretching arm pivotedin said attachment plate, a fastening member provided with at least oneattachment member for the heel wire and so pivoted in said stretchingarm that said fastening member is displaced forward by swinging thestretching arm downwards and forwards, a cover plate pivoted in saidstretching arm in front of the attachment member for the heel wirecovering said attachment member in operative position, said cover platebeing provided with an extension projecting beyond its journalling placeon the stretching arm, said extension being so formed that when thestretching arm is brought to its operative position, said extension willcome into contact with the attachment plate and thereby forcibly holdthe cover plate in the position covering the attachment member for theheel wire.

2. Ski-tie as claimed in claim 1 and in which the front end of saidextension of the cover plate is provided with a tongue directeddownwards, said tongue cooperating with a corresponding abutmentprovided at the front end of said attachment plate when the stretchingarm is in its UNITED STATES PATENTS operative position. Number Nam'eDate ALVAR ESKIL PETRUS KJELLSTRM. 2,276,252 Nashe et al. Mar. 10, 19425 2,381,793 Wallace Aug. '7, 1945 REFERENCES CITED FOREIGN PATENTS Thefollowing ,zxteferenlces are of .record .in the Number Country DateGermany ,July 2o, 1940 file of this patent: 693 857

